I decided to direct the output of my 2213 Eheim canister filter to the planter. I reduced the flow for now. Of course it made the tank rather cloudy. That should clear up...
Some observations. The geotextile seem to defy the gravity. Hanging free and lower than the bottom of the planter, capillarity seem to suck the water out of the planter.
Turning the filter on, water flows down the geotextile. I extended the geotextile by adding a longer layer as the dripping is a little noisy. Adding a longer layer that touches the surface of the water in the tank makes the system completely silent.
Here is the outflow of the canister filter flowing into the planter.
And finally, the big mess in the tank. Fishes really seem to careless.
9 June 2015, the flow of the filter is set to max. Water in the tank has cleared up a bit. Here is a close look at the mini river...
2015-06-13. Quick update. The planter is receiving visitors from the tank. Some snails are working their way up the water fall :)
2015-08-04. Peace Lily really catching up. Tank water is clear. It's my black water tank. The paint holder HOB filter is... holding on.